How to repair malformed XML?

Question

What is best practice to repair malformed XML files with PHP? For example CDATA part contains illegal chars. With regular expressions? Or execute some Linux command line tools?

Answer 1

Tidy

Tidy is a binding for the Tidy HTML clean and repair utility which allows you to not only clean and otherwise manipulate HTML documents, but also traverse the document tree.

// Specify configuration
$config = array(
           'indent'     => true,
           'input-xml'  => true,
           'output-xml' => true,
           'wrap'       => false);
// Tidy
$tidy = new tidy;
$tidy->parseFile('sample.xml', $config);
$tidy->cleanRepair();
// Output
echo $tidy;